Comparison of 129Xe MRI With 19F MRI in CF Lung Disease

"Hyperpolarized Xenon gas~* Hyperpolarized mixture (750ml HP 129Xe and 250ml nitrogen)~* Administration: By mouthpiece attached to a single use Tedlar bag.~* Dosage: 750 mL of the 129Xe mixture up to, but not exceeding, four doses of the 129Xe.~* Frequency: 10-minute interval between doses."

"* Inhaled PFP, a gaseous contrast agent (79% PFP; 21% O2, pre-mixed, medical grade gas)~* Administration: Full-face disposable ventilation mask and a standard Douglas Bag system.~* Dosage: Two controlled breaths of the contrast gas followed by a full breath and a 12-second breath-hold and scan for image acquisition.~* Frequency: Repeated 5 times followed by an identical five cycles with room air to ensure PFP gas wash-out has occurred."